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A new manual wheelchair propulsion system with self-locking capability on ramps

Opened Access A new manual wheelchair propulsion system with self-locking capability on ramps

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Autor: Rodríguez Jiménez, Gaspar
Rodríguez Salgado, David
Alonso, Francisco Javier
Castillo Granados, José María del
Departamento: Universidad de Sevilla. Departamento de Ingeniería y Ciencia de los Materiales y del Transporte
Fecha: 2018-11-08
Publicado en: Mechanical Sciences, 9 (2), 359-371.
Tipo de documento: Artículo
Resumen: A wheelchair user faces many difficulties in their everyday attempts to use ramps, especially those of some length. The present work describes the design and build of a propulsion system for manual wheelchairs for use in ascending or descending long ramps. The design is characterized by a self-locking mechanism that activates automatically to brake the chair when the user stops pushing. The system consists of a planetary transmission with a self-locking capacity coupled to a push rim with which the user moves the system. Different transmission ratios are proposed, adapted to the slope and to the user’s physical capacity (measured as the power the user can apply over ample time periods). The design is shown to be viable in terms of resistance, and approximate dimensions are established for the height and width of the propulsion system. Also, a prototype was built in order to test the self-locking system on ramps.
Cita: Rodríguez Jiménez, G., Rodríguez Salgado, D., Alonso, F.J. y Castillo Granados, J.M.d. (2018). A new manual wheelchair propulsion system with self-locking capability on ramps. Mechanical Sciences, 9 (2), 359-371.
Tamaño: 7.985Mb
Formato: PDF

URI: https://hdl.handle.net/11441/81463

DOI: 10.5194/ms-9-359-2018

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